Fungicidal and bactericidal compositions containing 1-(4&#39;-isopropylbenzyl)-piperazine



FlE-EEE Ol 29451-t645 Patented Oct. 19, 1948 FUNGICIDAL AND BACTERICIDAL COMPOSI.

TIONS CONTAINING l- (4'ISOPROPYLBEN- ZYL) -PIPERAZINE Ferdinand B. Zienty and George W. Steahly, St.

Louis, Mo., assignors to Monsanto Chemical Company, St. Louis, Mo., a corporation of Delaware No Drawing. Application May 24, 1947, Serial No. 750,382

12 Claims. (Cl. 16733) 1 2 V This invention relates to a novel composition uene. The acid salts may then be crystallized 1-(4-isopropylbenzyl) -piperazine and its acid from the solution and thereby recovered.

salts and also to novel fungicidal and bactericidal In the preparation of the novel fungicidal and compositions containing the novel compound or bactericidal composition of the present invention, its acid salts. 5 the carrier may be selected from a Wide variety One of the objects of the present invention is of substances, depending primarily upon the parto provide a novel compound 1-(4-isopropylticular application for which the compositio is benzyl) -piperazine and its acid salts, possessing to be adapted. For example, in the treatment of marked fungicidal and bactericidal activity. fungus and bacterial infections on the skin of Another object is to provide a novel fungicidal animals, it is desirable to use a suitable ointment and bactericidal compositions containing 1-(4'- base such as petrolatum and to disperse in that isopropylbenzyl) -piperazine' or its acid salts, and. base an amount of 1-(4-isopropylbenzyl) -pipera carrier. A further object is to provide a Wax azine which will effectively control the growth p on suitable for the coating of paper, of the organism. For example, 01-15% of the c11o15hahp',h ese%: compound y b p oyed in the petrolatmn and bacterial growthpnsuchaubstancesMAnother base for this purpose. In the treatment orfjifrin-kbbfect ilTfE'fSrdi/ide a novel fungicidal and bacing water for livestock such as chickens, hogs, tericidal composition for the treatment of actian cattle', it is desirable to disperse approxinomycosis, furunculosis, and other fungus and mately 0.1-2% of an acid saltof 1-(4-isopropylbacterial infections in Warm-blooded animals. benzyD-piperazine in the water. For agricultural A further object is to provide a novel composispray purposes, it is desirable to disperse'approxition for the control and inhibition of fungus and mately 05-15% of 1-(4'-isopropylbenzyl) -piperbacterial organisms in the drinking Water for azine, or preferably an acid salt such as the distock. A further object is to provide a novel agrihydrochloride of this compound, in water. The cultural fungicidal and bactericidal composition.- 2 resulting spray solution may then be applied to A further object is to provide a novel composition the vegetation. As an alternative, the free base for the treatment of textiles to render them recompound or an acid salt thereof may be dispersed nt to fungus n ba i l rowth. to the extent of 0.5-5% in a solvent such as min- Further objects will beco e app from t e eral oil and the concentrate thus formed may following esc p a examplesthen be emulsified with Water in suitable propor- According to the present invention, generally time such. as one part of the compound per 200 stated, We have found that the novel substance, parts of water nd desirably in the presence of a l p py e y -'I P n having the suitable Wetting agent such as cetyl dimethyl formula: benzyl ammonium chloride or sodium lauryl benzone sulfonate. l Nax compositions possessing en anced resist- N CHZOOEKCHBM ance tcr-fung'u's'a n d bacterial growth may beprepared by dispersing 1- (4'isopropylbenzyl) -piper and its acid salts such as the monohydrochloride, azine or its acid salts in a Suitable Wax composi' monoacetate, dihydrochloride, diacetate, sulfate 40 tion suchas paramn or a combination of Q a and phosphate possess marked activity in the and a suitable resin such as copal. For this purinhibition and control of the growth of fungus pose -5 parts of the free W compound or and bacterial Organisms for a Wide variety f theequivalent amount of an acid salt thereof has applications been found satisfactory, although larger amounts 1 (4' IS0propy1benZy1) jpe i may be 5 may be employed as desired, depending upon the pared b any desired method, for examme, by nature and extent of the bacterial or fungus enheating one mole of 4-isopropylbenzyl chloride Vironmentwith five moles of piperazine at 120-130 C. and A novel composition for the treatment of tex thereafter treating the reaction mixture with tiles t render t resistant to growth of aqueous caustic soda solution and recovering the fungus and bacterial Or nisms may be provided product from the reaction mixture by fractional byf dispersing l-( l' isopropylbenzyl) -piperazine distillation. The acid salts of the free base comor an acid saltthereof such as the dihydr chlopound may be prepared by reacting the substance ride, diacetate, sulfate, or phosphate in a suitable with an equivalent amount of the appropriate solvent such as acetone or toluene, or in the case acid in a suitable solvent such as acetone or tolof the acid salt, water, and immersing the textile in the solution. Subsequent to the immersion, the textile may be dried by any suitable means. If desired, a suitable wetting agent such as cetyl dimethyl benzyl ammonium chloride or sodium lauryl benzene sulfonate may be employed in the impregnating solution.

In addition to the illustrative compositions described hereinabove for the purpose of inhibiting and controlling fungus and bacterial infection, numerous other compositions embodying 144'- isopropylbenzyl)-piperazine may be formulated, and the foregoing illustrations together with the examples appearing hereinafter, are to be construed merely as illustrative of the novel compositions of the present invention.

The following examples will serve to further illustrate the novel compounds and compositions of the present invention.

Example I Example II Parts by weight 1-(4-isopropy1benzyl) -piperazine 0.1-15 Petrolatum Sufiicient to make 100 The components were blended to form uniform mixtures and the resulting ointments wer spread on the skin of livestock for the treatment of actinomycosis and furunculosis. The treatments were found to give marked inhibition of the growth of the organisms.

Example III Parts by weight l-(4-isopropylbenzyl)-piperazine 0.5-15 Cetyl dimethyl benzyl ammonium chloride 0.0l1 Water Sufficient to make 100 Cotton duck fabric was immersed in the resulting solution and the fabric was thereafter dried. Exposure of the treated fabric to rot organisms such as Chaetomium globosum, Aspergz'llus niger, and Metarrhzeium sp. indicated a mark inhibition of fungus growth on the treated fabric.

Example IV Parts by weight l-(4'-isopropylbenzyl) piperazine dihydrochloride 0.5-5 Water Suflicient to make 100 This solution was applied to leather shoes infected with mold organisms. The results indicated a marked inhibition of mold growth on the shoes.

Example V Parts by weight 1-(4'-isopropylbenzy1) -piperazine 0.5-15 Mineral oil Sufficient to make 100 The resulting concentrate was dispersed in water in the ratio of one part of the active ingredient to 500 parts of water and the mixture was then emulsified. The emulsion was sprayed on the fruit of apple trees. The results indicated a marked inhibition of fungus and bacterial growth as compared to untreated trees.

Example VI Parts by weight l--(4'-isopropylbenzy1) piperazine 0.1-5 Paraffin -1 50 Copal resin 45-495 The paraffin was melted with the resin and the 1-(4'-isopropylbenzy1) -piperazine Was dispersed in the resulting melt. The molten composition was then applied to paper, Cellophane, cheese,

and fruit and the objects thus treated were subjected to fungus and bacterial activity. The results indicated a marked inhibition and control of the organism on the treated objects.

We claim:

1. A compound selected from the group consisting of 1-(4'isop-ropylbenzyl)-piperazine and its acid salts.

1- (4-Isopropylbenzyl) -piperazine.

3. 1-(4-Isopropylbenzyl) -piperazine dihydrochloride.

4:. 1-(4-Isopropylbenzyl) -piperazine sulfate.

5. A fungicidal and bactericidal composition comprising a substance selected from the group consisting of 1-(4-isop-ropylbenzyl) -piperazine and its acid salts, and a carrier.

6. A fungicidal and bactericidal composition comprising a dispersion of a compound selected from the group consisting of l-(4'-isopropylbenzyl) -piperazine and its acid salts, in a solvent.

'7. A fungicidal and bactericidal Wax composition comprising a compound selected from the group consisting of 1- (4'-isopropylbenzyl) -piperazine and its acid salts, and a wax.

8. A fungicidal and bactericidal textile treating composition comprising an aqueous solution of an acid salt of 1-(4'-isopropy1benzyl)-piperazine.

9. An agricultural fungicidal and bactericidal composition comprising an oil-in-water emulsion of a compound selected from the group consisting of 1-(4'-isopropylbenzyl) -piperazine and its acid salts.

10. An agricultural fungicidal and bactericidal composition comprising an oil-in-watcr emulsion of a compound selected from the group consisting of l-(4-isopropylbenzyl)-piperazine and its acid salts, and a wetting agent.

11. A process for making a fungicidal and bactericidal composition comprising dispersing a compound selected from the group consisting of 1-(4-isopropylbenzyl) -piperazine and its acid salts in a liquid medium.

12. A process for making a fungicidal and bactericidal composition comprising dispersing a compound selected from the group consisting of 1-(4'-isopropylbenzy1)-piperazine and its acid salts in a waxy medium.

FERDINAND B. ZIENTY. GEORGE W. STEAI-ILY.

N 0 references cited. 

